The latest and greatest driver for AMD/ATI FirePro 3D cards (I use the V7900) now works with the X.Org version used by CentOS 6.4. Previous versions only worked on 6.3 and earlier, requiring a rollback of X11 and Mesa RPMs. That's not longer necessary. Everything seems to work with the 12.104.2 driver. Gé -- -- Gė